What this tool does
Curl → Fetch uses restricted command lexing to recognize URL, Method, Headers, Body, and Basic Auth, without invoking a shell or executing cURL. An Unsupported option or warning is reported when an unsupported option is encountered, rather than silently generating a potentially bad request.
- Supports -X, --request, -H, --header, -d, --data, --data-raw, --data-binary, -u, and --user.
- Strings in the output are safely escaped according to JavaScript rules.
- The resulting fetch will not be executed, nor will the input URL be requested.
How to use it
- Paste a supported cURL command.
- Click "Convert to Fetch".
- Read errors or warnings about unsupported options.
- Check and copy the generated JavaScript.
Common uses
- Migrate cURL examples from API documentation to front-end code.
- Organize duplicate headers and request bodies into fetch options.
- Review the Method, Certification, and Body in the command.
Privacy and security
The curl command only parses text as supported arguments, it does not execute the command or access the URL within it.
Curl → Fetch Features
Safely parse common cURL commands into fetch code and explicitly report unsupported options. Review the result, then copy it for use.
FAQ
Will cURL be executed when converting?
No. The tool only parses characters and does not make calls to the shell, cURL, or the network.
Will unsupported parameters be ignored?
It will not be silently ignored; the page will point out specific options or give an explicit warning of non-conversion.
Does the generated fetch code run automatically?
No. The output is code you can copy; the tool does not run it.
How to deal with -u parameter?
Supported username:password will be converted to the corresponding Basic Authorization Header and treated as sensitive data.